Prevent APP Data erase while flashing new firmwarehttps://devzone.nordicsemi.com/f/nordic-q-a/33719/prevent-app-data-erase-while-flashing-new-firmwareI&#39;m gonna store some initial data in flash, this data must be saved permanently (I need about 1024 bytes. it&#39;s 1 page), so how can I protect this flash area with my data (I use the last page for this) not to be erased while I reflash new firmware. Usuallyen-USTelligent Community 13Wed, 25 Apr 2018 15:00:59 GMTRE: Prevent APP Data erase while flashing new firmwarehttps://devzone.nordicsemi.com/thread/129822?ContentTypeID=1Wed, 25 Apr 2018 15:00:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6d375060-d385-4988-93ac-97c3fc6f6592Joakim Jakobsen<p>Hi!</p> <p>As far as I know there is no way to &quot;save the data permanently&quot;, so that it is protected from an erase.</p> <p>When using, i.e <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.tools/dita/tools/nrf5x_command_line_tools/nrf5x_nrfjprogexe.html" target="_blank" rel="noopener noreferrer">nrfjprog</a>, you could use the sectorerase option when programming your device.</p> <p>Sectorerase: If <code>--sectorerase</code> is given, only the targeted non-volatile memory pages, excluding UICR, is erased.</p> <p>Read more about the available commands <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.tools/dita/tools/nrf5x_command_line_tools/nrf5x_nrfjprogexe_reference.html?resultof=%22%6e%72%66%6a%70%72%6f%67%22%20">here</a>.</p> <p>Let me know if you have further questions.</p> <p>Best regards, <br />Joakim</p><div style="clear:both;"></div>